Patent FR-2899834-A1 (FR)
Title: Device for cutting mask for adhering on part of car e.g. wheel to be painted, comprises sheet material having support, unit for cutting the mask in the sheet material on the support, and unit for applying the sheet material on the support
Inventor: GANCI ERIC
IPC: B23K26/10
Filed: 2006-04-14
Abstract: The device for cutting mask for adhering on a part of a car such as window-pane, windshield, rear window, side window, outside of a mirror, wheel and hub cap to be painted, comprises a sheet material having (4) a support (3), an unit for cutting the mask in the sheet material on the support, an unit for applying the sheet material on the support, an unit for collecting the cut mask and recovery of the sheet material after the cutting of the mask, an electronic unit connected to the displacement unit of cutting unit (9). The device for cutting mask for adhering on a part of a car such as window-pane, windshield, rear window, side window, outside of a mirror, wheel and hub cap to be painted, comprises a sheet material having (4) a support (3), an unit for cutting the mask in the sheet material on the support, an unit for applying the sheet material on the support, an unit for collecting the cut mask and recovery of the sheet material after the cutting of the mask, an electronic unit connected to the displacement unit of cutting unit (9) and to an actuator of the applying unit and recovery unit (6) of the sheet material, deflecting rollers, and a holding case equipped with an outlet slit for the cut masks constituting the recovery units of cut masks. The applying unit and the collection unit of the sheet material are arranged for operating a displacement of the sheet material held on the support with respect to the cutting unit. The collection unit of the sheet material is constituted by a roller rotating by a motor in which the sheet material is rolled up, and the applying unit of the sheet material is constituted of a roller, which is rotated by the motor. The cutting unit and their displacement and the displacement of the sheet material are controlled using a program according to two-dimensional geometrical data of mask or three-dimensional data of non-painting part, which is stored in a database linked to the electronic unit. A part of the sheet material is interposed between the roller and the support, and an another part of the sheet material is interposed between the support and the recovery unit. Ends of the deflecting rollers are fixed in a supporter. The support is made by a pedestal with a help of legs, and comprises a curved exterior surface on which the sheet material is stretched using the applying unit and the recovery unit of the sheet material. The cutting unit is constituted by a cutting tool such as cutting blade, laser, water jet, jet and air pressure, which is driven by displacing perpendicularly to a direction of displacement of the sheet material and is driven between a cutting position towards the support and a non-cutting position away from the support. The two cutting tools of the cutting unit moves transversely in an unwinding direction of the sheet material in a same line. The applying unit and the recovery unit of the sheet material are activated in the direction of displacement of the sheet material from the applying unit to the recovery unit.